Water-jacket.



C. W. HAWKES.

WATER JACKET.

LIPPLIOATION FILED JAN. 11, 1909.

Patented May 11,1909.

Q =23 F m z WITNESSES:

sHmmraN. n. c.

"a 7 i hit it Lan algal "WATER-.1 ELCKET.

Apnlication filed. January 11, 19:39.

a r 1 and btate of Pennsylvania, have invented certain new and useful lnuiroveinents in d ateralachets, of which thefollowing is a full, clear, and exact description, reference being had to the accompanying drawings,

ring a part 1 ereof.

invention has relation improvements in Water-jackets for cupola, olast and similar furnaces; and it consists in the novel construction of jacket more fully set forth in the specification and pointed out in the claims.

In the drawings Figure l is a longitudinal section on the line 11 o Fig. 2 showing one form of my invention; 5 l M l 1. 2 2 is an elevation of one-half of the jacket orolren ahove the twyers; Fig. 3 is a sectional detail of the stayholt connection between the sheets; Fig. 4- is a sectional detail showing a modified form of stay-colt connection and 5 and 6 are similar sectional details showing still other modifications of construction. l

The present invention is improvement on the construction of water-jacket shown and described in U. S. Letters Patent 815,013 issued to me under date of March 13, 1905, and while having the same ohjects and purposes as the patented construction, it is susceptible of a number of modifi ations any one of which may fulfil the requirements (if wiat shall constitute a good, oonnnereial, durable and useful water-jacket.

The improvement herein is directed to the connection between the sheets or walls of the water-jacket and the stay-l: olts, which latter,

though not directly welded to either sheet, yet are so united thereto that all danger of leakage is eliminated.

The advanta es of the invention will he better apparent from a detailed description thereof which as is as follows:

Referring to the drawings, and for the present to Figs. 1. to 3 inclusive, 1, represents Specification of Letters Patent.

Patented May 11, 1909.

Serial No. 271,655.

Y the onposite end of the ltolt terminating in a reduced stein l which is passed through an open' iq in the outside sheet and subsequently riveted on the outside to said outside sheet, (as in iny-patent aforesi aid). The end of the holt engaging the openingin the inside sheet 1, is flared to conform to the taper of the hole, but does not lill the hole completely. Into the portion of the hole thus left unfilled hy the holt is suhsequently inserted a plug 5 which is welded to the inside s eet, the plug thus liecoining virtually an integral part ofthe sheet and flush with the outer face thereof, that is to say the face which is exoosed to the heat of the furnace and to the ore charge. l

J. is holt thus has one end embedded it were in a socket formed for its reception in the inside sheet,

such socket heing formed is} the hole eriginally reamed in the sheet and subsequently closed at its outer end hy the plug 5 welded to the sheet, and since the weld forms a seamless joint, it is evident that leakage at such joint is iinpossihle.

in Fig. 5: the hole in the inside sheet is formed hy punching and drifting thus leaving a tapering hollow nipple a projecting into the jac ret, the bolt 3 eing flared to conform to the ts L of the nipple. Lilre in the form first (lGSCfL d, the plug 5 is inserted into the cavity opposite the end of the holt and welded to the sheet. The belt is secured to the outside sheet in the same manner as that described in connection with Figs. 1, and 3.

Tn Fig. 5. i show an ordinary screw stayholt 3. In this case the stay-bolt is screwed into the inside sheet, but does not pass all the way through. T hat portion of the threaded hole formed in the sheet and left unoccupied by the bolt, is filled by the plug 5 which is welded to the sheet.

The outside sheet end of the bolt can of course he secured to its sheet shown in 5, that is by shouldering the same to the sheet, and riveting the bolt on the outside to the sheet; or, as shown in Fig. (5, the holt 3 could he screwed to hoth sheets, and riveted to the outside sheet. in fact so far the outside sheet con cerned, any of the usual constructions could be followed with any of the holts here proposed.

It will he seen that so far as shouldering the bolt to the sheets is concerned, this shouldering is limited to one of the sheets only, namely the outside sheet. This permits the two sheets to he first riveted together at their flanges; the drilling and the countersinking, or the drilling and the drifting, or the drilling and the screw-threading, can be done after the sheets have been riveted together; then. the bolt is passed or placed through the two sheets from the inside sheet (as is obvious). In the event the bolt should be screwed into the inside sheet (sometimes called the inner sheet) and shouldered against the outside (outer) sheet, a groove 8 is made in the bolt for screwing the same to a tight bearing between the outer sheet and the shoulder, by means of a screw driver. Gt course, in order that a bolt may be passed through the sheets in the manner outlined above, after the sheets have been riveted together at the flanges, the opening in the sheet into which the bolt is first inserted (the inside sheet) must necessarily be equal to or larger than the opening in the opposite sheet (outside sheet). This is obvious from an inspection of the drawings.-

It is not to be inferred from the foregoing thatthe constructions described and claimed are to be limited in their application to waterjackets specifically. The invention may be applied to air jackets, boilers, and all other constructions where stay-bolts are employed. It is possible of course, that in the welding of the plug 5 to the inside sheet, it (the plug) may incidentally adhere to the end of the belt which it protects and covers, but the welding of the plug to the bolt is not herein contemplated. T he bolts maybe so inserted as not to necessarily make a right angle with the sheets, a slight inclination of the bolt con stituting no departure from the present invention. in fact, in boiler constructions, stays, and stay-bolts do assume almost any conceivable angle with the sheets to which they are secured.

in the drawings the weld is shown by a distinct hatching, though in practice the plug will be so merged with the body of the sheet as to leave no distinct line or seam of demarcation, and will practically become an integral part of the sheet.

Having described my invention what I claim is:

1. A jacket comprising an inside and an outside sheet, the inside sheet being provided with openings having their outer ends closed by plugs welded to the sheet and thereby forming sockets, stay-bolts having one end embedded in said socket and the opposite end engaging the outside sheet.

2. A jacket comprising an inside and an outside sheet, the sheets being provided with oppositely disposed openings, stay-bolts inserted into the openings and terminating at points between the ends of the openings formed in the inside sheet, plugs inserted into the portions of the openings in the inside sheet left unfilled by the bolts, and welded to the inside sheet, the opposite ends of the bolts being secured to the outside sheet.

3. A jacket comprising an inside and an outside sheet, the sheets being provided with oppositely disposed openings, stay-bolts inserted into the openings and terminating at points between the ends of the openings formed in the inside sheet, plugs inserted into the portions of the openings in the inside sheet left unfilled by the bolts, and welded to the inside sheet, the opposite ends of the bolts being shouldered against the outside sheet and riveted thereto on the outside thereof.

4. A jacket comprising an inside and an outside sheet, the inside sheet being provided with an opening terminating in the planes of the opposite faces of the sheet, the outside sheet having an opening opposite thereto, a stay-bolt having its end inserted in said open ings and terminating in the opening of the inside sheet at a point between the opposite faces of the sheet, and a plug inserted into the unfilled portion of the opening in the inside sheet and welded to the sheet, the opposite end of the stay-bolt being secured to the outside sheet.

5. A jacket comprising an inside and an outside sheet, the inside sheet being provided with an inwardly tapering opening terminating in the planes of the opposite faces of the sheet, the outside sheet having an opening opposite thereto, a stay-bolt having its ends inserted in said openings and terminating in the opening of the inside sheet at a point between the opposite faces of the sheet, and a plug inserted into the unfilled portion of the opening in the inside sheet and welded to the sheet, the oppositeend of the stay-bolt being secured to the outside sheet.

6. A jacket comprising an inside and an outside sheet, the inside sheet having sockets formed therein provided with closed bottoms, and stay-bolts having one end resting in the sockets and the opposite end secured to the outside sheet.

'7. A jacket comprising an inside and an outside sheet, the inside sheet having openings formed therein, plugs welded to the inside sheet and closing the outer ends of the openings aforesaid, thereby forming suitable sockets, and bolts projecting out of said sockets across the space between the sheets and secured with their opposite ends to the out side sheet.

In testimony whereof I affix my signature, in presence of two witnesses.

' CHARLES WILLIAMS HAWKES. l/Vitnesses J. A. HAinLToN,

KATHRYN E. BITTNER. 

